<template>
    <button @click="changeMsg">改变当前页面值</button>
    <div>{{mCurrentMsg}}</div>
</template>
<script setup lang="ts">
import { ref } from 'vue';
const mCurrentMsg = ref("fra3-2 ：")
const changeMsg = () => {
    mCurrentMsg.value = mCurrentMsg.value + "改变后"
}
console.log("22222");

</script>
<style scoped>

</style>